Revoker for weft replenishing loom



' June 13, 1939. R TURNER 2,162,290

REVOKER FOR WEFT REPLENISHING LOOM Filed Feb. 26, 1958 2 Sheets-Sheet lInvenror R \chau'd G.Turne.\"

Attorney June 13, 1939. R G, TURNER 2,162,290

'REVOKER FOR WEFT REPLENISHING LOOM a An;

5i 0 9a 50 9 x9 6 i 72 76 J 75 0 T4 L R 78 v 77 {fl-f}.

Q 7 O H Inventor Rmhag G.Turne\- Q4 1. )g rfi Attorney Patented June 13,1939 PATENT OFFECE 2,162,290 REVOKER FOR WEFT REPLENISHING LOOM RichardG. Turner, Worcester, Mass, assignor to Crompton & Knowles Loom Works,Worcester, Mass, a corporation of Massachusetts Application February 26,1938, Serial No. 192,783

9 Claims.

This invention relates to improvements in revoking mechanism for weftreplenishing looms and it is the general object of the invention toprovide such a mechanism which shall be very i sensitive so that itshall require a very small force only derived from the shuttle for itsoperation. v

In the usual automatic bobbin changing loom transfer mechanism is set bya weft detector 10 when the weft of the running shuttle is substantiallyexhausted. The transfer mechanism includes a transferrer arm movableabout a fixed center and carrying a movable latch which is normally outof the path of an operating dagger on the lay. When a transfer is calledthe latch is raised into the path of the dagger so that forward motionof the lay will depress the transferrer arm to effect transfer.

When the shuttle is properly boxed the called transfer will always becompleted. Should the shuttle fail to be properly boxed, however, itwill not be in proper position to receive the incoming bobbin and underthese conditions revoking mechanism recalls the transfer by lowering thelatch before it can be engaged by the dagger on the lay. Previousrevoking mechanisms have derived practically all of their force requireddirectly from the shuttle, and this force is frequently sufficient tobend the shuttle engaging part of the revoking mechanism in thedirection of the length of the shuttle and thereby prevent correctrevoking. As a result of this bending the previously known revokers havenot always operated satisfactorily and this is due to the fact that toomuch pressure is required to be transmitted from the shuttle to therevoking mechanism. It is necessary to hold the shuttle feeler formingpart of the revoking mechanism in a definite position and this hasusually been done by a relatively strong spring which serves not onlyto. hold the shuttle feeler in position but also retains the latch inthe path of the lay dagger.

It is an important object of my present invention to provide a revokingmechanism capable of moving the latch into the path of the lay dagger bya force transmitted through a yieldable connection and thereafterpartially break the yielding connection by a positive force derived fromoperating parts of the loom. Of the total force required to effect acomplete breakage of the yielding connection the greater part issuppliedby the operating part of the loom independently of the shuttle, and thesmall remaining part of the force necessary to break the yieldingconnection completely is derived from the shuttle with little or notendency to bend the shuttle feeler.

To illustrate -one application of my invention I have shown a system oflevers employed in multicolor shuttle changing looms of the type setforth for instance in prior Patent No. 2,054,192. In that system thereis a regularly moving lever driven by a cam on the bottom shaft of theloom and carrying a dog normally moving in a path lying on one side of astationary lever. When transfer is called the dog moves into liftingrelation with respect to the stationary lever to raise the latterpreparatory to transfer. In the present instance the transferrer latchis connected to the stationary lever and moves upwardly with the latterand into the path of the lay dagger. The stationary lever and latch areattached to each other by a yieldable connection amply strong to liftthe latch and rock the revoking mechanism into shuttle feeling position.A stop is provided to limit upward motion of the latch but the cam is sodesigned as to continue lifting of the normally stationary lever afterupward motion of the latch has been arrested. The purpose of thisadditional upward motion of the stationary lever beyond that required toset the transfer is partially to break the yielding connection and movea stud carried by the stationary lever out of a notch in the connectionand place said stud on a flattened area of the connections. sure betweenthe stud and the flattened area is suflicient to hold the latch in setposition, but should revocation be necessary the flattened area movesdown relatively to the stud with only a slight further opening orbreaking of the yield- :2

ing connection and by a small force derived from the shuttle.

In the operation of my invention the yielding connection will becompletely broken at every call for transfer, the time required for thebreaking when transfer is completed being comparatively long and thelatter part of the breaking requiring but little force. When a transferis revoked, however, this interval of time is shorter but the latterpart of the breaking effort will still require a small force only. Asshown hereinafter the yieldable connection is acted upon by threeseparate forces at least two of which are unequal. When the normallystationary lever rises it delivers to the yielding connection sufficientforce to lift the latch and place the shuttle feeler in transferposition. The yielding connection must be strong enough to transmit thisamount of force. As the lever continues to rise a greater force isapplied the effect of which causes the The presinitial stage of breakingof the yielding connection. The force required for this second stage isnecessarily larger than the first force. The third force is thatrequired to complete the breaking of the connection or to effect thesecond stage of the breaking.

During the interval between setting for transfer and revocation orresetting of the feeler the third of the forces described must beslightly greater than that required to support the weight of the partsresting on the yielding connection. In the particular arrangement to bedescribed therefore the first force just described is the weakest, sinceit need be just strong enough to lift the weight of the parts, the thirdforce is slightly stronger than the first force or may under someconditions be of the same magnitude, while the second force described isthe greatest. The significant relationship of the forces, however, aswill appear hereinafter, is that the third force shall be comparativelysmall, being actually that force required to sustain the weight of theparts plus a small additional force to insure maintenance of the partsin their set position for transfer.

The several parts of the invention are capable of different relativesettings in all of which, however, it is desirable that the first stageof yielding shall have been completed by the time the tip of the shuttlereaches the shuttle feeler during the forward beat of the lay. If theshuttle is widely misplaced its front wall will strike the shuttlefeeler comparatively early in the forward motion of the lay but at sucha time the shuttle would be able to transmit a relatively large force tothe shuttle feeler. Because of this fact it is possible to set the partsso that the first stage of breaking of the yielding connection will notnecessarily be completed when a wide part of the shuttle strikes theshuttle feeler.

With these and other objects in view which will appear as thedescription proceeds, my invention resides in the combination andarrangement of parts hereinafter described and set forth.

In the accompanying drawings, wherein a convenient embodiment of myinvention is set forth:

Fig. 1 is an end elevation of a loom having my invention appliedthereto, the lay and shuttle being shown in vertical transverse sectionsand the parts being in their normal position prior to setting for atransfer,

Fig. 2 is a View similar to a portion of Fig. 1 but with the latch andshuttle feeler shown set for transfer,

Fig. 3 is similar to Fig. 2 but shows the operation of the parts duringa revoking operation, and

Fig. 4 is a front elevation of parts shown in Fig. 3 with the inner tipof the shuttle shown in position to strike the shuttle feeler and takenin the direction of arrow 4, Fig. 3.

Referring to the drawings, I have shown a loom frame [0 having a lay I Imounted on lay swords l2, connectors l3 and top or crank shaft [4 whichhas one revolution for each beat or pick of the loom. The layreciprocates back and forth in the usual manner around the rocker shaft15.

A shuttle box [6 receives shuttle S and there is projecting forwardlyfrom the lay a transfer dagger I! for engagement with a transferrerlatch it! normally down as shown in Fig. 1 below the fixed path in whichthe dagger moves. A transferrer arm 19 moves about a fixed stud 20 andis pivotally connected to the latch carrier 2i as at 22. By means of theusual spring not shown but surrounding the stud 20, the transferrer armis held in a raised position shown in Fig. 1, but can be depressedagainst the action of the spring when the dagger engages the latch onthe forward beat of the lay.

The magazine M is shown in the present instance as supplying twodistinctive types of reserve bobbins indicated at W and W, respectively.The magazine rocks about a fixed center 23 and is attached by aconnector 24 to a lever 25 rockable about a fixed stud 26. The dependingrod 21 is also connected to the lever 25 and carries at the lower end ahook 28 which can be moved into or out of the path of the stud 29 on anormally stationary lever 30. The latter rocks about a relatively largefixed stud 3| in the lower part of the loom frame and has a forward arm32 normally down but raised preparatory to transfer.

A selector mechanism designated at 0 moves in timed relation with theshifting shuttle boxes at the opposite end of the loom not shown hereinbut well understood, and the selector is connected by a rod 33 to arocking frame 34 through which the hook 28 extends and by which the hookis guided. When in one position the frame 34 will locate the book asindicated in Fig. 1 for depression by the stud 29 when the stationarylever rocks in a clockwise direction, but when in its other positioncorresponding to a different setting of the shifting boxes at the otherend of the loom, the hook will be moved rearwardly from the positionshown in Fig. 1 to be out of the path of the stud 29. In this latterposition the magazine M will remain as shown in Fig. 1 with the frontreserve weft W under the transferrer arm, but when the hook is understud 29, rocking of stationary lever will cause rocking the magazinethrough the connections described to place the rear reserve bobbin Wunder the transferrer. For a further description of the magazinereference may be had to my co-pending application Serial No. 129,245. Itis considered sufiicient for present purposes to state that when thedrop shuttle boxes shift the controller C will also shift as well as thehook and the magazine will shift on transferring beats if weft W iscalled for by the transfer.

The bottom shaft 35 of the loom has secured thereto a track cam 36 whichcompletes a revolution in two beats of the loom. This cam drives a roll31 on the rear arm of a regularly moving lifting lever 38 pivoted onstud 3| and carrying at its forward end a dog 39. The latter normallyclears a shelf 40 on the stationary lever 33, but when a transfer iscalled the dog is moved to a position under the shelf by one or theother of the setting elements 4| as lever 33 rises. Thereafter as thelever 38 rocks to lift the dog the stationary lever will also be raisedto cause upward motion of the forward end 32.

The color selector mechanism C and the parts associated therewith may besubstantially as shown in the aforesaid patent, and is controlled by asolenoid 42 connected by wires 43 and 44 to a battery or other source ofelectric power 45 and an electric feeler 46. The latter is mounted bylinks 41 pivoted to a stationary part of the loom indicated at 48. Theweft detector forms no part of my present invention and may be of anydesired form and acts to detect condition of Weft on alternate forwardbeats of the loom when the shuttle is present on the detecting side ofthe loom. When substantial exhaustion occurs the solenoid 42 isactuated'and the dog controlled as already described.

The shipper handle 50 is fastened to the shipper rod 5i and is shown inFig, 1 in the driving position. A stud 52 moving with the shipper handleis positioned for engagement with a hook 53 pivoted at 54 to thetransfer latch l8. The relation of the parts just described is such thatwhen the shipper handle is moved to the left or forwardly as shown inFig. l the latch can be raised because of the distance between the hook53 and the stud 52, but when the loom is stopped by rocking of theshipper handle in a right hand direction the stud 52 moves down nearenough to the hook 53 to prevent the latch from moving into the path ofthe lay dagger. This part of the mechanism may be similar to thatdescribed in my prior Patent No. 2,065,772 and has for its purpose theprevention of operation of the replenishing features when the loom isbeing turned over by hand.

The parts thus far described, except as mentioned hereinafter, may be asconstructed heretofore and of themselves, and except as combined withother parts to be described, form no part of my present invention.

In carrying my present invention into effect I provide a stand 60 heldto the loomside by a bolt 6i and having two adjusting screws 62 toengage a surface of the loomside so that the angular position of thebracket may be varied by adjustment ofthe screws 62. The bracket 69carries a stud 63 on which is mounted a carrier lever 64 having a horn55 to which is secured the shuttle feeler 66 which I preferably form asa rod having an enlarged rear head 61 for direct engagement with theshuttle S and held in angularly adjusted position on arm 65.

Lever 6 3 has an arm 68 which is pivotally connected as at 69 to a rodhead 10 adjustable on the upper end of a setting rod 1!. The lower endof rod ll is adjustably connected to another rod head "12 from whichdepends a finger 13. This finger has a notch M in the lower end thereofabove which is a flattened area 15 leading to a recessed inclined part16. The bottom of finger i3 is connected by a light tension spring '11to the lower end of a second finger l8 also connected to the spring Tland pivoted at its upper end as at 19 to the rod head. The two fingersare'movable a way from each other against the action of spring ll andare normally urged to move toward each other by said spring. A stud ill]mounted on the forward end 32 of lever 30 is designed to cooperate withthe two fingers and is normally located in the pocket 14 where it isheld when the two fingers are drawn toward each other as set forth infull lines in Fig. 2. The two fingers, spring ll and stud 8 constitute ayielding connection designated generally at Y between lever end 32 androd H and is an important part of my invention as will be pointed outlater.

Extending upwardly from the arm 68 is a latch lifter adjustablevertically in the arm 68 as indicated in Fig. 2 by a check nut 86. Theupper end of the latch lifter is curved forwardly and is located underthe latch 48 at all times. An adjustable stop screw 81 held in fixedstructure as indicated in Fig. 2 may be used to limit upward motion ofthe latch 18, while a light tension spring 88 connected to the latch andalso to a part of the shipper handle tends to assist gravity in loweringthe latch.

The arm 64 has a small finger 90 which moves between and is limited byfront and back adjustable stopping screws 9i and 92, respectively,carried in the stand 60, thus limiting the motion of the shuttle feelerand latch lifter. A stud 93 on the lay is placed to engage the arm 94 onlever 64 when the latter is in rear position for a resetting purpose tobe described.

The cam 36 shown in Fig. 1 has inclines and declines as suggested inthat figure for giving the lever arm 32 its vertical motions and the camis so set that an incline 95 is effective to lift the lever'32 to setthe loom for transfer as will be described hereinafter at some timesubsequent to the determination at the other end of the loom that adepleted shuttle previously having given an indication of exhaustion isabout to be returned to the replenishing side. The incline merges with adwell 96 which maintains the lever 38 in raised position sufficientlylong to permit engagement of the dagger I! with the latch I8. I preferto keep the rod H in raised position by the cam throughout the entiretransferring operation and during resetting of the lever 55 by stud 93on the lay.

In operation, the parts will be normally in the position shown in Fig.1, running of the loom effecting a rise of the dog 39 every other beatalong a path which clears the shelf 4!]. As the color of weft beingwoven changes there will be a shift of the rocking frame 34 and thecolor control mechanism C as already described. I wish it to beunderstood, however, that although I have illustrated my invention inconnection with'a multicolor loom, it is nevertheless applicable toplain or single color magazines such as those used for mixing filling,and my invention is in no way restricted to all of the structure shownin the lower part of Fig. 1 or to the multicolor magazine.

So long as sufficient weft for continued weaving remains in the runningshuttle the parts will re main as shown in Fig. 1, but when exhaustionoccurs in the active shuttle the weft detector 46 acting through thesolenoid 42 will set one or another of the elements 4| in a position tocontrol the dog 39 and at the proper time as described in my priorPatent No. 2,054,174 the dog will be pushed over to a position under theshelf 40. The cam will then lift arm 32 and stud 80 will act through theyieldable connection Y to lift rod H and rock lever 64 about its axis63. This lever 64 is normally limited in its left hand motion by stopscrew 92. As the lever turns in a right hand direction as viewed in Fig.l two important changes take place, first, the latch will be raised fromthe normally down position of Fig. 1 to the up position shown in Fig. 2,and second, the head 6'! of the shuttle feeler will move from its normalforward position in front of the path of the shuttle as suggested inFig. 1 to a rear position where it can engage the shuttle S if thelatter is misplaced.

When the latch and the shuttle feeler have been moved to transferposition, screw 9! prevents further motion of lever 65, but arm 32continues to lift stud 8 and cause it to spread fingers l3 and 18against the action of spring 11. This spreading requires more force thanthat necessary to rock lever 65. Continued up motion of stud 80 placesit above the notch and between the surface !5 and finger 18 as shown infull lines in Fig. 3. These latter parts hold the stud 80 tightly enoughto maintain the latch and shuttle feeler in transfer position. The cam36 is so designed as to arrest upward motion of the stud 80 before thelatter reaches the recessed or inclined part 16 of the finger l3, dwell96 ac- 5 complishing this result. When in the position shown in Fig. 3very little force is required to produce relative motion between thestud 8!! and the fingers which frictionally engage it.

The conditions indicated in Fig. 3 as just described exist duringforward beat of the lay and before the latter reaches a position wherethe shuttle feeler can determine whether transfer should occur or berevoked. As the lay approaches the temporarily placed shuttle feeler twoconditions with respect to the shuttle can exist, either the shuttle isproperly placed for transfer, or it is widely enough misplaced torequire revocation of transfer.

If the transfer is normal due to proper boxing of the shuttle, forwardmotion of the lay will cause engagement of the latch by the dagger andthe transferrer arm will be depressed to effect transfer. During thelatter part of the forward beat of the lay and subsequent to engagementof the latch by the dagger, the stud 93 will engage arm 94 and rocklever 60 to the left from the full to the dotted line or normal positionshown in Fig. 3. This depresses rod 'II and moves the two fingers l3 andI8 downwardly so that the stud 80 lies between them and opposite theinclined or recessed portion 16 of the finger 13. In this position thestud 86 is completely disconnected from connection Y. Dwell 96 of thecam holds stud 80 up long enough to permit this disconnecting to occur.

The transfer is now complete and the shuttle feeler has been moved toits foremost position, limited by stop screw 92, and it is stillnecessary to reset the yielding connection at the lower end of rod H.This is caused by a decline 00 on the cam 36 which permits lowering ofthe lever end 32 and stud 80 under the action of a relatively heavytension spring I0! interposed between a fixed part of the loom and thenormally stationary lever 30, see Fig. 1. The rod H is prevented frommoving downwardly with the stud 80 during resetting by stop screw 92 andas stud 80 descends it again spreads the fingers and then enters thenotch 14, whereupon the parts are reset and ready for another operation.Stop screw I02 may be used if desired to hold lever 30 in normalposition and relieve those parts of the mechanism above stud 80 from theaction of relatively strong spring llll.

If for any reason the shuttle fails to be completely boxed it will benecessary to revoke the transfer. On such a beat of the loom all theoperations previously described for setting the mechanism for transferwill take place in their usual manner, the stud 80 being as shown inFig. 3 when the dagger approaches the latch and there is a normalexpectancy of transfer. Due to misplacement of the shuttle, however,some part of the latter such as the point as indicated in Fig. 4 willengage the shuttle feeler head 61 at a time in the cycle of theoperations prior to that at which stud 93 would normally engage lever60. As the lay continues to advance after engagement of the shuttle withthe shuttle feeler the latter will move forwardly to rock lever 68 in acounterclockwise direction from the full toward the dotted line positionof Fig. 3 and thus lower the latch lifter 85 and permit spring 88 tomove the latch l8 downwardly out of the path of the lay dagger IT.

The only force which resists rocking of lever 60 under these conditionsis that created by a frictional contact between the stud 80 and the twoarms 13 and 18. This is a small force which is derived from the'shuttleand transmitted to the feeler head 61 without damage to the shuttle orlikelihood that the feeler will be pushed off the shuttle tip. Thesurface 15 will ordinarily be substantially parallel to the adjacentsurface of finger 18 when the parts are as shown in full lines in Fig.3. If a slightly greater resisting force is desired the surface 15 canbe inclined upwardly and toward the finger 18 to define a wedge to beopened by the stud 80 by relative upward motion of the latter withrespect to the fingers.

The connection between stud 80 and rod 'H is again broken completelyalthough the breaking is completed earlier than in the case of a normaltransfer. The subsequent resetting will be the same as already describedand the parts restored to normal position so that another effort can bemade by the loom to replenish the shuttle. The parts 15, 78 and 80 areso proportioned as to remain in the position shown in Fig. 3 immediatelysubsequent to setting of the magazine for transfer and this relationshipof the yielding connection will not be disturbed by spring 88 which istoo light to cause relative downward motion of fingers 13 and 18 withrespect to the stud 80.

It will be seen therefore that engagement of the shuttle with head 61serves to prevent transfer by means of a force derived from the shuttlejust sufiicient to move the stud 80 from the full to the dotted lineposition shown in Fig. 3. This force is quite small as compared withsimilar forces found in previous revoking mechanisms and is the reasonwhy the revoking mechanism described herein is so much more sensitivethan those previously used.

From the foregoing it will be seen that I have provided forcetransmitting mechanism for setting a train of mechanism for transferincluding a yieldable connection which breaks the train in twosuccessive stages the first of which requires a considerable forcederived from cam 36 and the second part of which requires only a verysmall force derived from the shuttle. It will also be seen that thebreaking of this train is complete whether the transfer be carried outnormally or whether it is interrupted by a revocation, the onlydifference being that the completion of the breaking occurs earlier whena transfer is revoked. It will also be seen that mechanism is providedfor resetting the train of mechanism subsequent to a normal or revokingtransfer. In actual practice I have found that looms equipped with theform of revoking mechanism set forth hereinbefore will operatesatisfactorily to prevent transfer by a very slight misplacement of theshuttle, so slight in fact as to render the previous forms of revokingmechanism ineffective.

Having thus described my invention it will be seen that changes andmodifications may be made therein by those skilled in the art withoutdeparting from the spirit and scope of the invention and I do not wishto be limited to the details herein disclosed, but what I claim is:

1. In a weft replenishing loom having a lay and operating with ashuttle, means to hold a reserve bobbin for transfer into the shuttle,transfer mechanism to insert the reserve bobbin in the shuttle, a layengaging latch forming part of the transferring mechanism and normallyout of the path of the lay, a shuttle feeler normally out of the path ofthe shuttle, an actuator having a given motion, a yieldable connectionbetween the actuator and the latch and shuttle feeler yieldable in twostages one of which requires a large force and the other of whichrequires a small force only, said actuator transmitting a force withoutyielding of the yielding connection to set the latch and shuttle feelerfor transfer during the first part of said given motion, said actuatorthereafter continuing to move to effect a first stage of yielding of theyielding connector by the application of a relatively large force, andthe shuttle feeler movable by a misplaced shuttle to effect a secondstage of yielding of the yielding connection by transmission thereto ofa relatively small force to effect movement of the latch away fromtransfer position.

2. In a weft replenishing loom having a lay and operating with ashuttle, means to hold a reserve bobbin for transfer into the shuttle,transfer mechanism for the reserve bobbin including a latch normally innon-transferring position, a shuttle feeler normally in non-transferringposition, positioning mechanism to cause the latch and shuttle feeler tomove together toward and away from transfer position, yielding actuatingmeans for the positioning mechanism yieldable in two stages the first ofwhich requires a relatively large force and the second of which re"quires a relatively small force, said yielding actuating means acting tomove the positioning mechanism to transfer position without yielding,said yielding connection yielding under the relatively large forcesubsequent to the setting of the latch and shuttle feeler for transfer,and said yielding connection yielding to the relatively small force bypressure derived from a misplaced shuttle and transmitted through theshuttle feeler to the yielding means to effect movement of the latchaway from transfer position.

3. In a weft replenishing loom having a lay and operating with ashuttle, means to hold a reserve bobbin for transfer into the shuttle,transfer mechanism to insert the reserve bobbin in the shuttle, a layengaging latch forming part of the transfer mechanism and normally outof the path of the lay, a shuttle feeler normally out of the path of theshuttle, setting means to set the latch for engagement with the lay andmove the shuttle feeler into the path of the shuttle preparatory to atransferring operation, an actuator for the setting means moving in agiven path on transferring beats of the loom, means defining a yieldableconnection between the actuator and the setting mechanism, saidyieldable connection to yield in two stages the first ofwhich requires arelatively large force derived from the actuator during the first partof the movement of the latter and the second stage requiring relativelysmall force to be derived from a misplaced shuttle acting through theshuttle feeler, means to cause the first stage of yielding after thelatch and shuttle feeler are set for transfer, the shuttle if misplacedtransmitting a relatively small force through the shuttle feeler to theyielding connection to cause the second stage of yielding, and means tocause resetting of the yieldable connection to normal conditionsubsequent to a transferring operation of the loom.

4. In a Weft replenishing loom having a lay and operating with ashuttle, means to hold a reserve bobbin for transfer into the shuttle,transfer mechanism to insert the reserve bobbin in the shuttle, a layengaging latch forming part of the transferring mechanism and normallyout of the path of the lay, a shuttle feeler normally out of the path ofthe shuttle, setting means to set the latch for engagement with the layand move the shuttle feeler into the path of the shuttle preparatory toa transferring operation, an actuator for the setting means moving in agiven path on transferring beats of the loom, means defining a yieldableconnection between the actuator and the setting means, said yieldableconnection offering two successive different resistances to yielding thefirst of which is relatively high and yields to a force derived from theactuator during the first part of the move ment of the latter and thesecond resistance being relatively small and yielding to a force derivedfrom a misplaced shuttle and transmitted through the shuttle feeler,means to overcome the first resistance after the latch and shuttlefeeler are set for transfer, the shuttle if misplaced transmitting arelatively small force through the shuttle feeler to overcome the secondresistance, and means to cause resetting of the yieldable connection tonormal condition subsequent to a transferring operation of the loom by aforce derived from said member.

5. In a weft replenishing loom having a lay and operating with ashuttle, means to hold a reserve bobbin for a transfer into the shuttle,transfer mechanism to insert the reserve bobbin in the shuttle, a layengaging latch forming part of the transferring mechanism and normallyout of the path of the lay, a shuttle feeler normally out of the path ofthe shuttle, setting means to set the latch and shuttle feeler fortransfer, an actuator for the setting means having a given settingmotion on transferring beats of the loom to cause the setting means toset the latch for engagement with the lay and move the shuttle feeler toshuttle feeling position preparatory to a transferring operation of theloom during the first part of said given motion, said connectionsincluding a yielding device, stop means to arrest motion of the settingmeans after the latch and shuttle feeler are set for transfer, thelatter part of said predetermined motion of the actuator causing theyielding device to yield in two stages, the first of which requires arelatively large force derived from said actuator and the second stageof which requires a relatively small force to be derived from amisplaced shuttle and transmitted through the shuttle feeler and settingmeans while said actuator is at the end of its predetermined motion, andmeans to reset the yielding device subsequent to a transferringoperation of the loom.

6. In a weft replenishing loom having a lay and operating with ashuttle, means to hold a reserve bobbin for transfer into the shuttle,transfer mechanism to insert the reserve bobbin in the shuttle, a layengaging latch forming part of the transferring mechanism and normallyout of the path of the lay, a shuttle feeler normally out of the path ofthe shuttle, setting means normally in non-transferring positionconnected to the latch and shuttle feeler and movable to transferposition to set the latch for engagement with the lay and set theshuttle feeler in engagement with a misplaced shuttle preparatory to atransferring operation of the loom, means to cause the latch to move outof engaging position with respect to the lay when the setting mechanismmoves from transferring to non-transferring position, an actuator forthe setting means moving in a given path preparatory to a transferringoperation of the loom, a yielding connection between the actuator andthe setting means, a stop to limit motion of the setting means when thelatter reaches transfer position, the actuator continuing to move afterthe setting means has reached transferring position to cause a firststage of yielding of said yielding connection by a force derived fromthe actuator, the shuttle feeler when engaged by a misplaced shuttlecausing a second stage of yielding by said yielding connection by aforce less than that derived from the actuator, and means to reset theyielding connection subsequent to a transferring operation of the loom.

'7. In a weft replenishing loom having a lay and operating with ashuttle, means to hold a reserve bobbin for transfer into the shuttle,transfer mechanism to insert the reserve bobbin in the shuttle, a layengaging latch forming part of the transferring mechanism and normallyout of the path of the lay, a shuttle feeler normally out of the path ofthe shuttle, setting means normally in non-transferring position andconnected to the latch and shuttle feeler and moving the latch toengaging position with the lay and the shuttle feeler in position toengage a misplaced shuttle when said setting mechanism moves from.nontransferring to transferring position, an actuator having a workingstroke in one direction and a return stroke in the opposite direction, ayielding connection between the actuator and the setting means to movethe latter from nontransferring to transferring position by a forcederived from the first part of the working stroke of said actuator, saidconnection capable of yielding first under a large force only andthereafter yielding under a small force, a stop to prevent furthermotion of the setting mechanism after the latter reaches transferposition, the latter part of the working stroke of the actuatoroccurring after the setting means has engaged the stop means to cause aninitial yielding of said yielding connection under a relatively highresistance which is overcome by a relatively large force derived fromthe actuator during the latter part of the working stroke thereof, theshuttle feeler when engaging a misplaced shuttle moving the settingmeans and latch to non-transferring position against the low resistanceof said yielding connection by a relatively small force derived from theshuttle, and a second stop to maintain the setting means innon-transferring position, the actuator on the return stroke thereofcooperating with the second stop after the setting means reachesnon-transferring position to establish normal driving connection betweenthe actuator and setting means.

8. In a weft replenishing loom having a lay and operating with ashuttle, means to hold a reserve bobbin for transfer into the shuttle,transfer mechanism to insert the reserve bobbin in the shuttle, a layengaging latch forming part of the transferring mechanism and normallyout of the path of the lay, a shuttle feeler normally out of the path ofthe shuttle, setting means normally in non-transferring position andconnected to the latch and shuttle feeler and movable to transferringposition to set the latch for engagement by the lay and set the shuttlefeeler for engagement by a misplaced shuttle preparatory to atransferring operation of the loom, means to cause the latch to move outof transferring position when the shuttle feeler moves the setting meansfrom transferring to non-transferring position, stop means to limitmotion of the setting means toward transfer position and towardnon-transferring position, an actuator having a working stroke in onedirection and a return stroke in the opposite direction, and a yieldableconnection between the actuator and the setting means, said yieldableconnection to yield in two stages the first of which requires arelatively large force and the second of which requires a relativelysmall force, motion of the first part of the working stroke of theactuator transmitting a force less than said relatively large forcethrough the yielding connection to move the setting means fromnon-transferring to transferring position, the latter part of theworking stroke of said actuator after the setting means has been stoppedin transfer position causing the first stage of yielding of saidyielding connection, and a misplaced shuttle engaging the shuttle feelerwhen the latter is set for transfer to transmit a relatively small forcethrough the setting means to return the latter to non-transferringposition and effect the second stage of yielding of said yieldingconnection, the return stroke of said actuator effective subsequent toreturn of the setting means to non-transferring position to exert saidrelatively small force on the yielding connection to reestablish normaldriving connections between said actuator and the yielding connections.l

9. In a weft replenishing loom having a lay and operating with ashuttle, means to hold a reserve bobbin in position for transfer,transferring mechanism to insert the reserve bobbin into the shuttle, alatch forming part of the transferring mechanism and normally out of thepath of the lay and movable into said path to actuate the transferringmechanism, a shuttle feeler normally out of shuttle detecting position,setting means to move with the latch and shuttle feeler and capable ofmoving the latch and shuttle feeler from non-transferring position totransferring position with the latch in said path of the lay and theshuttle feeler in shuttle detecting position, an actuator having a givenmotion and actuating the setting means to cause the latter to move thelatch and shuttle feeler to transfer position, and a yielding connectionbetween the actuator and setting means, the actuator capable of assumingthree positions relatively to the setting means by reason of theyielding of said yielding connection, the actuator during the first partof said given motion thereof moving the setting mechanism to cause thelatch and shuttle feeler to move to transfer position without yieldingof said yielding connection and while said actuator sustains the firstof said positions with respect to the setting means, said yieldingconnection thereafter yielding under a relatively large force during thelatter part of said given motion of the actuator after the latch andshuttle feeler have moved to transfer position to cause the actuator andsetting means to assume the second of said positions, the actuator beingat the end of said given motion when the parts are in said secondposition, and the shuttle feeler thereafter effective when engaging amisplaced shuttle to move the setting means by a small force derivedfrom the shuttle relatively to the actuator to said third position andcause the setting means to move the latch out of the path of the lay toprevent transfer.

RICHARD G. TURNER.

